Recirculation filter



Oct. 2l, 1952 E. CRANE RECIRCULATION FILTER 2 SHEETS-SHEET 1 Filed March -25 1950 1N VEN TOR. fda/ard. Crane Oct. 2l, 1952 E. CRANE RECIRCULATION FILTER I 2 Sl-lEETS-SHEET 2 Filed March 25. 1950 INVENTOR. Edward Crane MWIM t noventa-seelisto :recirculete rthe .soelding water f -R'ECIRCULATION FILTER Edward Crane, Ottumwa, Iowa, assigner vto Berker PATENT;

Poultry IEquipment Co., Ottumwa, Iowa, a cor'- poration of Iowa ApplicationfMrch 25, 1950, Serial N o. 151,911Y 9` c iiis. (Cl. 21o-152) This invention Arelates to a lter for 'ltering liquids andinnygbe included in tno eener-o1 clessication offspaceiilter-s. Y

Qne of the uses to. which the filter may b e set isin connection with poultry scelding machines although, of course, itmay be employed in eennection with other uses. In seeldins poultry creatouantities v#of Water nref:te q iiifieiiy one the Water rnust he heated. If 1 f water is continuouslvnsed in the scaldinssnioeess tn enuentities employed would v beton great with con.- senuent losses inthe amount of -wnter use@ 'eine the host requiredior nesting the Water: S/Yhen the :poultry :is fsonided, feathers :and einer artiolesfof, foreienncntter ielintoni the-nonltryfend if, the Water isflecirculated forreeuse in scelding, tnoseyportieles yof foreign matter tend f to .clog the waterfnozzies. It therefore -nooomesereatiy beeouse of., the great quantities `required and it 2 likewise becomes necessary `to employ .a highly eiiioient 1il ter so that the particles of 4 foreign metter .een te filtered out of the scolding .waiterv An. obieot., therefore, ofthe present invention is the provision of n lterwhioh is :highlylei en t for ltering'great quantities pf ma e r.-:vl

Theflier of thenfesent yinvent n oonsi. of', aytubular filter `structure rotatably mountedjnthe y-reoentnolecontaining thef-ivnterftofbe n ered and is ,immersed in the water.- :The filtered'waler; istvithdrcwnfronrthe interior of t filter;struc-l turegnnd rotation of- Ithe filter s eeffective- 1v Ainnovants,the vioeiitielesof f0 :A clogging the lterelement.

More specifically,` the filter ,or lterstrueture includes Aa, tubular y screen filter :ele Offre.l supporting structure sv ch, he ofyane my device whereby the objectsconteniplated are attained, as, hereinafter more fully. set forth;

pointed outin vthe cleimsgand illustrated in the accompanying drawings, wherein:

Figure 1- isa, qiagrammaucai'illustration of s poultry sc'alder embodying the .present invention; Figure 2 is a view from the left of Figure l;

Figure 3 is an enlarged sectional View teken Online 3-3 of Figurel; Figur e 4 isan-enlergedyiew. of the filterstructure showing `a; portionih section end z1- portion in elevation; and

Figure 5 is en y vexploded isometric'vie'iv of'v the various elements rnking up the `filter structure.

Referring-in .detaillto the drawings, Figure 1 p Ose offclrty and ashereillustrated-i-s in the form of a tunnel having an open Vlcottonfi and communicating with thetank"Li. The taLnk lil extendsglterlly beyond the scalder l2 on one side thereof and thetank is adapted tQreceive the water from the Ascelder after the'w'ater has been used for scaldingpoultry. Fowlsfarc indcated at L6 suspended er1-shackles .mounted onta conveyor I8 whichfpegss'es throughthescalder. Withinthe scsilder lere nozzles I2l] cnoppositfe sides` of the longitudinal centen :arranged for directies seeming veterthere4 in onto the fovvls. The nozzles ZU are vfecl by pipes A22 which leed from n monnine union in ern oo niiniif` nicates with the outlet o ffa-pump ,drivenlzyani eleetrie motor 28. .The intake of thenunip iepresenied by e anine 30 communicates `with the tank I4. Uponoperdtion ofthe 2 6, the

scelding water isfwithdravvn from the tank M and caused `to 119W throughthe pipes 24 and 22 tothe nozzles 20 Where the Water is directed onto the fowis and it fguis 'mtb' the rank1@ to berecirculated.

The filter vstructure ofV the present inventionis 'indicated inA its entirety by the numeralfznnd i`s` shown irido'tted lines in jligurejl tofindicate" its reierionsmprofhescaiderandthe trki Attention is directed tdFigures '3,' 4` and" 5 `for` the details of the filter structure. N I. l* structure 32 is'lrelativ'ely long andtubular-'eind includes a. frameworkmade up ofeJ plurality of The einer rings '34. Each ring 34 has a1-plurality ofc'ircumferentially spaced, axially' extending-spacers 36 Whichmay ybe .alsocreferred to 'as-venes inretelarbly integral Ting. The -Pngs Rial-e' 36 of one ring engage the next adjacent ring so that the rings are spaced apart axiallyY of the Structure. The rings 34 are provided with holes 38 for receiving screws 46 that are threaded into tapped holes in the extended ends of the spacers 36. The screws 48 thus lock adjacent rings together which are then locked into a cylindrical structure that is self-sustaining throughout its length. Preferably the spacers 36 are offset slightly circumferentially from one ring to the next.

One end of the filter structure 32 is closed by a plate 42 secured to the end ring 34. Mounted on the plate 42 is a shaft 44 reinforced by a collar 46 and mounted in a bearing 48. The bearing 48 is universally mounted on a stand or bracket 50 mounted in the tank I4, to oomf pensate for movement of the opposite end of the filter structure. Secured on the outer end of the shaft 44 for rotation therewith is a pulley 52 over which is trained a belt 54, the belt being also trained over a pulley 56 on the drive shaft of an electric motor 58. The motor 58 may be mounted on any convenient platform, such as 60, supported at the upper surface of the tank I4, the motor being adapted for rotating the filter structure 32.

At the opposite end of the filter structure lis an annular end member secured to the adjacent ring34 by any suitable means. Fitted in the inner surface of the member 62v is an annular bearing member 64 which in turn is ttedon a bearing member 66. The annular 'member 64 may be of rubber or similar material and the bearing member 66 is preferably a casting.

Figures and 3 show to best advantage the shape of the bearing member 66 which includes a central flange 68 and an outer fiange 'I0 which is eccentric with respect to the flange 68, and coaxial with the tubular screen structure 32. VAn oil seal 'I2 which may be conventional surrounds flange 'I0 fitting' against the member 64 and secured in place by an annular plate-like element 'I4 which is secured to the member 62 by means of screws 16.

Surrounding the framework made up ofthe rings 34 is a screen element 'I8 in the form of a sleeve which fits tightly on the framework and may be held in place by friction or it may'be welded to certain of the rings 34.

A tubular member or pipe 80 is fitted in the central opening of the member 66 and extends into the interior of the filter structure 32 for the greater part of its length. The inner end of the tubular member 80 is closed by a plate 82 and the lower surface of Ythevtubular member is provided with a pluralityof holes 84.- The outer end of the tubular member 8l] isthreaded into a flange 86. The pipe previously referred to leading from the intake of the pump 26 is` similarly threaded into a flange 88. The flanges 86 Vand 88 are fitted against opposite sides of the wall of the tank I4 and secured together and tothe wall of the tank by vbolts 90, with the pipes 80 and 30 in axial alignment andcommunicating with each other through an opening in the wall of the tank.

The interior of the filter structure 32 is ef- 4 passage of water in spite of large masses of foreign particles in the water.

The filter structure 32 is rotated by the motor 53 as above described and the pump 26 withdraws water from the interior of the filter for recirculating the Water. On rotation of the filter structure 32, the spacers 36 act as vanes and by centrifugal force tend to force the water from the interior of the filter structure outwardly through the screen element 18. When the filter is immersed in water as indicated in Figure 4, the centrifugal action is equal in all directions. The holes 84 in the tubular member 88 are disposed on the underside thereof and for that reason the water withdrawn through the tubular member by the pump is drawn upwardly from the bottom of the filter structure. In the lower part of the tank and below the filter, the vforeign particles have an opportunity to fallaway from the filter and be deposited in the tank. The water is not drawn through the screen element 'I8 at the top portion of the filter, but instead the Water is forced outwardly therethrough, causing a backwashing action which dislodges any particles that may have accumulated on the screen.

It will be noted that the tubular member 86 is disposed in the lower portion of the screen structure `which enhances the action of the Water own central longitudinal axis and this axis ofv rotation is eccentric to the longitudinal axis vof the tubular member 8U. Consequently, the portion of the screen element I8 that is at the bottom and nearest the holes 84 is constantly and progressively changing with the result that water is drawn through a constantly changing portion of the screen element and the remainder of the screen element is being backwashed, thus retaining the screen element constantly free of clogging by foreign particles. l l

While I have herein shown and described a preferred embodiment of my invention, manifestly it is capable of modificationV and rearrangement of parts without departing fromv the spirit and scope thereof. I do not, therefore. Wish to be' understood as limiting this invention to the precise form herein disclosed, exceptl as I may be so limited by the appended claims.

I claim as my invention:

1. A filtering device comprising an elongated cylindrical drum adapted for being mounted submerged in a liquid in a container, the cylindrical surface of said drum being a filter screen through which the fluid passes to the interiorl of the drum, means for rotating said drum around its longitudinal axis, an elongated suction pipe through one end of said drum` and extending Within said drum parallel-to the cylindrical wall thereof, said suction pipe being positioned eccentric with respect tothe axis of said drum, whereby the spacing from the Wall of the pipe to the cylindrical Wall of the drum varies continuously around the periphery of the pipe, a portion of said pipe having intake holes therein providing for movement of filtered water into vsaid pipe, said intake holes being the only openings `in the length of said pipe extending within said drum, said vintake holes being located at and adjacent to the region of minimum spacingbetween the pipe f and the drum, and a portion of the pipe being imperforate and cooperating with the rotating cylindrical wall of the drum and the fluid in the space therebetween to pump a portion of the iluid therebetween reversely through the screen to clean said screen.

2. A ltering device comprising an elongated cylindrical drum adapted for being mounted submerged in a liquid ina container, the cylindrical -surface of said drum being a filter screen through which the fluid passes to the interior of the drum, means for rotating said `drum around its longitudinal axis, an elongated suction pipe passing through one end of said drum and extendingwithin said drum parallel to the cylindrical wall thereof, the extended end of said suction pipe being closed, said suction pipe extending within said drum over the greater portion of thelength of said drum, said suction pipe being positioned eccentric with respect to the axis of said drum, whereby the spacing between the cylindrical wall of the pipe and the cylindrical wall of the drum varies continuously around the circumference of the pipe from a minimum to a maximum and back to a minimum, a portion of the cylindrical wall of the pipe having intake holes therein providing for movement of filtered water into said pipe, said intake holes opening from said pipe generally in the same direction as the direction in which the pipe is offset from the axis of the drum, and a portion of the pipe being imperforate and cooperating with the rotating cylindrical wall of the drum and the fluid in the space' lcylindrical drum includes a plurality of circular rings disposed axially adjacent each other, and a plurality of circumferentially spaced spacer y elements between each two adjacent rings for axially spacing said rings apart.

4. A device as set forth in claim 1 wherein said intake holes are located over substantially one-half of the circumference of said pipe, which half of said pipe is spaced least from the cylindrical wall of the drum.

5. A device as set forth in claim 2 wherein the portion of the cylindrical wall of the pipe having intake lholes therein extends substantially along the en tire length of the pipe positioned with said drum.

6. A device as set forth in claim 2 wherein the axis of said intake pipe is spaced substantially vertically below the axis of the drum, and said intake holes are located within the lower half of the pipe.

'7. A device as set forth in claim lwherein the axis of said intake pipe is spaced substantially vertically below the axis of thedrum, and said intake holes are located substantially over the lower half of the pipe and along substantially the entire length of the pipe positioned within the drum. l

8. A device as set forth in claim 1, wherein the portion of the pipe having intake holes therein extends substantially alongthe entire length of the pipe positioned within said drum.

9. A device as set forth in claim 1, wherein the axis of said intake pipe is spaced substantially vertically below the axis of the drum, said intake holes being located Within the lower half of the pipe. y

EDWARD CRANE.

REFERENCES CITED The following references are of record in th file of this patent:

UNITED STATES PATENTS Number Name Date 963,186 `Trump July 5, 1910 1,212,978 Malone Jan. 16, 1917 1,513,378 Anthony Nov. 4. 1924 

